Radio control



Aug. 27, 1940. A. c. READING 2,212,792

RADIO CONTROL Filed Oct, 6, 1939 2 Sheets-Sheet 1 In vemfor .4 (1 ieadz'iz A/ By @Mm A iiomeys g- 27, 1940 A. c. READING 2,212,792

RADIO CONTROL Filed Oct. 6. 1939 2 Sheets-Sheet 2 In veniar *1. 6313800 12 M J? 1 2 By A iiorneys Patented Aug. 27, 1940 srarss UNITE rarest rrie RADIO CONTROL Application October 6,

1 Claim.

My invention relates to improvements in radio controls of the type designed for use with a telephone set to silence a radio receiving set as an. incident to use of the telephone set, the invention being designed as an improvement over that disclosed in my copending application Se-' rial No. 298,328,.filed Oct. 6, 1939.

The invention is designed with the particular purpose in view of providing a simply constructed, efficient and easily installed apparatus for use in conjunction with a so-called wall typev telephone set to disable a radio receiving set of the electric type as an incident to lifting or" the telephone receiver off the hook.

Other objects are also comprehended by my invention, all of which, together with the precise nature of my improvement, will be readily understood when the succeeding description and claims are read with reference to the drawings accompanying and forming part of this specification.

In said drawings:

Figure 1 is a view partly in front elevation and partly in perspective of the invention illustrating the relation of the same to a wall type telephone.

Figure 2 is a view in top plan.

Figure 3 is a view in vertical section taken on line 3--3 of Figure 2 looking in the direction indicated by the arrows.

Figure 4 is a View in vertical section taken on the line 4 l of Figure 3 looking in the direction indicated by the arrows.

Figure 5 is a view in transverse section taken on the line 55 of Figure 3 looking in the direction indicated by the arrows, and

Figure 6 is a View in longitudinal section taken through the connector.

Referring to the drawings by numerals, I have shown my invention therein as applied to a wall type telephone set including a switch box i having an upper edge flange 2 by means of which and the screws 3 said box is adapted to be attached to a wall 4. The usual hook 5 extends out of one side of the box i horizontally for supporting, 45 in the present instance, a combination transmitter and receiver hand piece 6. As will be understood, the hook 5 in such sets is adapted to be weighted down under the weight of the hand piece 5 deposited therein and to thereby disconnect the phone set and automatically moves upwardly in limited degree to render the set operative when the hand piece 6 is removed from said hook 5. Such sets being well understood in the art require no further explanation.

The apparatus of my invention comprises a 1939, Serial No. 298,329

shallow control box '1, preferably of elongated rectangular form and any suitable metal, adapted to be secured in upended position to the wall 4 alongside the switch box i in suitably spaced relation to the hook of the latter and with its 5 open side forward. For this purpose the ends of the box 5 may be provided with ears 8 for receiving screws 8'. A cup-like cover 9 also of metal is provided to fit snugly over the box 1 and close the same.

Extending laterally from the side of the control box 1, opposed to the hook 5, and adjacent the upper end of said box is an elongated switch lever 59 pivoted, as at H, adjacent its inner end in the control box l to the back of said box for vertical rocking movement. Mating slots l2 and IS are provided in the box I and cover 9 for the extension of the lever iii therethrough, the ends of said slots providing stops limiting movement of said lever it in opposite directions respectively. The outer end Hi of the lever iii is curved forwardly and flattened so as to overlie the hook 5 and underlie the upper end of the hand piece 6, the arrangement being such that said outer end of the switch lever Iii is weighted down to approximately its limit of movement in that direction by said hand piece and together with said hook 5 when the hand piece is positioned in the hook. A coil spring having its opposite ends suitably connected to the box 1 and lever Hi, as at 16, ll, respectively, urges the outer end of the lever I0 upwardly and hence the inner end downwardly. The inner end of the switch lever ill is T-shaped, as at i8, and designed in the upward limit of movement thereof to bridge a pair of horizontal, laterally spaced terminals l9 forming part of a pair of contact bars mounted in upstanding position in the box l in spaced apart relation and adjacent the side of the latter opposite that side from which the switch lever It) extends. The mounting for the contact bars 29 comprises a block 2! of insulation material, such as rubber, rabbeted, as at 22, to fit into mating recesses 23 suitably provided in the appropriate side of the box I and cover 9, said bars 20 being secured to the inner face of said block by a pair of screws 24 forming binding posts. A pair of leads 25 extend from said screws 24 out of said box I and cover 9 by way of an aperture 26 provided in the block 2!. The inner end of the switch lever I0 is formed in two parts 27, 28 connected together by a sleeve-like coupling 29 of hard rubber, or the like, whereby the T- shaped part [8 is insulated from the remainder of said lever.

The leads 25 are extended through a sheathing 30 to a connector 3| for plugging into the usual wall socket, not shown. The connector 3| comprises a cylindrical plug 32 of suitable insulation material having a radial recess 33 in one side thereof closed by an apertured cap-plate 34 fixed to the plug by screws 35. On one side of its axis the plug 32 has suitably secured therein a longitudinally extending conductor strip 36 of suitable metal. On the opposite side of its axis a pair of similar strips 31, 38, are secured in said plug in end to end spaced relation with opposed ends bent and secured by screws 39 to opposite side walls of recess 33, said screws forming binding posts. Strip 36 and strip 38 extend from one end of the plug 32 to form a pair of prongs for plugging into the wall socket. At the other end of the plug 32 the strip 36 and the strip 31 extend into end recesses 40 in said plug for contact by the usual prong plug, not shown, when inserted in said recesses and which, as will be understood, forms part of the plug-in line of the usual radio receiving set. The before-menmentioned leads 25 are extended through the plate 34 into the recess 33 and connected to the screws 39, respect1vely.

The operation of my invention will be readily understood. When the hand piece 6 is suspended in the hook 5 it bears down on the end M of the switch lever It), weighs said end down and the T-shaped part 18 of said lever is thereby thrown up to bridge the terminals 19 so that a circuit from the house current source may be maintained through the connector 3| in a manner which will be understood, to energize the radio receiving set. On the other hand, as soon as the hand piece 6 is removed from the hook 5, the outer end H! of the switch lever l0 flies up under the influence of the spring 15 and the T- shaped part l8 of said lever moves down out of bridging relation to the terminals l9, whereby the said circuit is interrupted until the hand piece 6 is again replaced in the hook 5.

The foregoing will, it is believed, sufiice to impart a clear understanding of my invention without further explanation.

Manifestly the invention, as described, is susceptible of modification without departing from the inventive concept and right is herein reversed to such modifications as fall within the scope of the subjoined claim.

What I claim is:

Radio control apparatus for use in the line of connection between a radio receiving set and a,

wall socket and with a Wall telephone set including a receiver hook, said apparatus comprising a casing for attachment to the wall alongside said hook, a pair of contact members in said casing adapted to be bridged to establish a circuit through the same, a plug type connector for lever and engaged with said contact members under such rocking of the lever, and spring means tending to rock said lever in the opposite direction whereby when said lever isrelieved 0f the weight of the receiver thereon said part is moved out of bridging relation to said contact members.

AULDEN C. READING.

' insertion in said wall socket to interpose the 

